Demountable rim.



G. H. DRAKE & 0. PROMBNGHENKEL.

' DBMOUNTABLE RIM.

APPLICATION FILED OGT.19, 1912;

Patented Apr. 8, 1913.

I 2 SHEETSSHEET 1.

G. H. DRAKE .& G. PROME NCHENKEL DEMOUNTABLE RIM.

APPLICATION FILED 00T.19,|1912.

' 1,058,354. Patented Apr. 8, 1913.

I 2 EEEEEEEEEEEE 2.

Figi Fig GEORGE H. DRAKE AND CHARLES PROMENCHEE'KEL, OF DETROIT,MICHIGAN.

DEMOUNTABLE RIM.

Specification of Letters Patent.

Patented Apr. 8, 1913.

Application filed October 19, 1912. Serial-No. 726,605.

1 b all whom it may concern:

Be it known that we, GEORGE H. DRAKE and CHARLES PROMENCHENKEL, citizensof the United States of America, residing at Detroit, in the county ofWayne and State of Michigan, have invented certain new and usefulImprovements in Demountable Rims,

of which the following is a specification,

reference being had therein to the accompanying drawings.

This invention relates to a demountable rim for a vehicle wheel and toan arrangement thereof whereby it may be quickly applied or removed, theretaining means holding it positively in position when once in place. v

The invention consists in the matters hereinafter set forth and moreparticularly pointed out in theappended claim.

In the drawings, Figure 1 is a view in side elevation of a demountablerim that embodies features of the invention; Fig. 2 is a view in sideelevation of a wheel prepared to receive the rim; Fig. 3 is a viewpartially in elevation and partially in'section of the wheel; Fig. 4 is.a similar view showing a companion wheel with reverse tire holdingmembers; Fig.5is'a view in section showing the inner face of the rim andthe holding means; and Figs. 6, 7 and 8 are views in detail of a lockingmember.

As herein shown, a wheel having a conventional nave 1 and felly 2 has afelly band 3 with conical or beveled face. At regular intervals thereonare sections of screwthreads 4 of a proper pitch to'draw an applied bandwith mating threads on to the cone or tapered face. In order. that atire band may be applied to-a wheel on either side of a vehicle, thewheels are made in sets and as indicated on Fig. 5, with reverse taperor beveled face, and with reversely disposed threads indicated at 5; Aband 6 with the periphery adapted to retain a tire of any preferreddesign has an inner tapercd face 7 mating with the beveled face of thewheels to which it is'applied. At regular intervals on the inner face ofthe band, sets of screwthread segments 8 are applied to register withand engage the threads 4. A second set of segment screwthreads 9 ofreverse pitch to the threads 8 are formed on or secured to the innerface of the rim at such distance from the thread 8 that the rim may beapplied either to a rightor left hand .wheel with the threads 4 or 5lying between the band threads so that a turn of the band in onedirection or the other brings the threads into engagement and locks therim in place. A portion of the felly-2 is cut away to form a slot orseat in which a locking plate 10 may be inserted. 1

One end portion 15 of the plate is beveled and rounded to engage therecesses in the mating end of the seat and felly. The other end portionis gained orv notched to engage a spring latch 11 with a thumb piece 12by which it may be readily drawn out of engagement. Ratchet projections13 are oppositely disposed on the inner face of'the locking member 10 toengage corresponding recesses in the rim when the latter is fully homeon either set of threads. The side of the recesses and correspondingface of the locking member are correspondingly grooved transversely toform a socket for the air tube or nipple 14 to an applied tire.

By this construction a solid rim is obtained which may be readily forcedto seat on a wheel and when in position is firmly supported and ispositively locked against retrograde movement- By the use of right andleft hand threads rims may be so applied tothe wheels of a vehicle thatunder ordinary travel the tendency of the rims is to retain theirposition, the locking members bein sufficient to hold the rims when thevehicle isbeing backed. As the rim is not cut away, it, may be made soas to combine the required strength with lightness.

Obviously, changes in the details of construction .may be made withoutdeparting from the spirit of our invention and we do not care to limitourselves to any particular form or arrangement of parts.

What we claim is i A demountable rim for a vehicle Wheel having an innerbeveled face provided at intervals with segments of screwthreads ofopposite pitch.

In testimony whereof we afiix our signatures in presence of twowitnesses.

GEORGE H. DRAKE. CHARLES PROMENCHENKEL. Witnesses:

C. R. STICKNEY, A. M. DORR.

@oples of this patent may he obtained tor five cents each, by addressingthe Commissioner oi hteau,

Washington, D. G.

